/*
* Copyright (c) Microsoft Corporation. All rights reserved.
* Copyright (c) 2023 Huawei Device Co., Ltd.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*     http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* This file has been modified by Huawei to verify type inference by adding verification statements.
*/

// === tests/cases/conformance/expressions/typeGuards/typeGuardRedundancy.ts ===
declare function AssertType(value:any, type:string):void;
let x: string|number;
AssertType(x, "union");

let r1 = typeof x === "string" && typeof x === "string" ? x.substr : x.toFixed;
AssertType(r1, "union");
AssertType(typeof x === "string" && typeof x === "string" ? x.substr : x.toFixed, "union");
AssertType(typeof x === "string" && typeof x === "string", "boolean");
AssertType(typeof x === "string", "boolean");
AssertType(typeof x, "union");
AssertType(x, "union");
AssertType("string", "string");
AssertType(typeof x === "string", "boolean");
AssertType(typeof x, "union");
AssertType(x, "string");
AssertType("string", "string");
AssertType(x.substr, "(number, ?number) => string");
AssertType(x.toFixed, "(?number) => string");

let r2 = !(typeof x === "string" && typeof x === "string") ? x.toFixed : x.substr;
AssertType(r2, "union");
AssertType(!(typeof x === "string" && typeof x === "string") ? x.toFixed : x.substr, "union");
AssertType(!(typeof x === "string" && typeof x === "string"), "boolean");
AssertType((typeof x === "string" && typeof x === "string"), "boolean");
AssertType(typeof x === "string" && typeof x === "string", "boolean");
AssertType(typeof x === "string", "boolean");
AssertType(typeof x, "union");
AssertType(x, "union");
AssertType("string", "string");
AssertType(typeof x === "string", "boolean");
AssertType(typeof x, "union");
AssertType(x, "string");
AssertType("string", "string");
AssertType(x.toFixed, "(?number) => string");
AssertType(x.substr, "(number, ?number) => string");

let r3 = typeof x === "string" || typeof x === "string" ? x.substr : x.toFixed;
AssertType(r3, "union");
AssertType(typeof x === "string" || typeof x === "string" ? x.substr : x.toFixed, "union");
AssertType(typeof x === "string" || typeof x === "string", "boolean");
AssertType(typeof x === "string", "boolean");
AssertType(typeof x, "union");
AssertType(x, "union");
AssertType("string", "string");
AssertType(typeof x === "string", "boolean");
AssertType(typeof x, "union");
AssertType(x, "number");
AssertType("string", "string");
AssertType(x.substr, "(number, ?number) => string");
AssertType(x.toFixed, "(?number) => string");

let r4 = !(typeof x === "string" || typeof x === "string") ? x.toFixed : x.substr;
AssertType(r4, "union");
AssertType(!(typeof x === "string" || typeof x === "string") ? x.toFixed : x.substr, "union");
AssertType(!(typeof x === "string" || typeof x === "string"), "boolean");
AssertType((typeof x === "string" || typeof x === "string"), "boolean");
AssertType(typeof x === "string" || typeof x === "string", "boolean");
AssertType(typeof x === "string", "boolean");
AssertType(typeof x, "union");
AssertType(x, "union");
AssertType("string", "string");
AssertType(typeof x === "string", "boolean");
AssertType(typeof x, "union");
AssertType(x, "number");
AssertType("string", "string");
AssertType(x.toFixed, "(?number) => string");
AssertType(x.substr, "(number, ?number) => string");


